ICD-10 Code K55.041 – Focal (segmental) acute infarction of large intestine (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K55.041 – Focal (segmental) acute infarction of large intestine
What it is
K55.041 identifies a focal or segmental acute infarction affecting part of the large intestine. Use it when documentation states acute ischemic injury or infarction limited to a segment of colon.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include sudden abdominal pain, tenderness, and signs of colonic ischemia or infarction confirmed by imaging, endoscopy, surgery, or pathology.
When to use this code
Use this code when the provider documents focal or segmental acute infarction of the large intestine, including a localized ischemic infarct of the colon. It is appropriate when the record clearly identifies the large bowel as the affected site. If the note only says “ischemic colitis,” check documentation for the exact diagnosis before coding.
Do not use for
Do not use this code for infarction of the small intestine, nonspecific abdominal pain, or chronic intestinal ischemia. If the chart does not specify the large intestine or the infarction is not acute, check documentation.
Coding tip
Code the most specific bowel location and acuity documented; if the record is vague, query for clarification before assigning K55.041.